Monday's terrorist bombings only 400 miles (640 kilometers) away from the site of the Winter Olympics in Sochi, Russia, have a geopolitical back story involving implied threats from Saudi Arabia's intelligence chief Prince Bandar bin Sultan to Russian President Vladimir Putin last summer when Bandar was pressing Putin to withdraw his backing for the Syrian government.

According to a diplomatic leak detailing the Bandar-Putin meeting in Moscow on July 31, Bandar suggested that Putin's agreement to abandon the government of Bashar al-Assad would lead Saudi Arabia to restrain its Chechen terrorist clients who have been attacking Russia targets for years. Putin reportedly grew furious, interpreting Bandar's offer as a warning that the Sochi games would be threatened by terrorism if Putin didn't comply, according to opednews.com website.

At the time, Putin warned Saudi Arabia of potentially severe consequences -- suggesting military retaliation -- if Bandar's implied warning was followed up by actual terrorist attacks like the ones in Volvograd on Monday, killing more than 30 people, the report said.

Putin has staked much of his prestige on a successful Olympics in Sochi, and he also would risk losing face if it were perceived that Bandar had executed a terrorist plan to disrupt the Winter Olympics and that Putin was powerless to stop it.

According to the leaked diplomatic account of last summer's meeting, Bandar sought Russia's cooperation on several Mideast concerns, including Syria, and told Putin, "I can give you a guarantee to protect the Winter Olympics in the city of Sochi on the Black Sea next year. The Chechen groups that threaten the security of the games are controlled by us."

Putin reportedly responded, "We know that you have supported the Chechen terrorist groups for a decade. And that support, which you have frankly talked about just now, is completely incompatible with the common objectives of fighting global terrorism that you mentioned. We are interested in developing friendly relations according to clear and strong principles."

Besides safety for the Sochi Olympics, Bandar raised the potential of Saudi cooperation with Russia on oil and other investment matters, saying, "Let us examine how to put together a unified Russian-Saudi strategy on the subject of oil. The aim is to agree on the price of oil and production quantities that keep the price stable in global oil markets," according to the diplomatic account.

According to the report, a source close to the Russian government also said that this mix of overt inducements and implied threats infuriated Putin who barely kept his anger in check through the end of the meeting with Bandar. Putin viewed Bandar's offer to protect the Sochi Olympics as something akin to a Mafia don shaking down a shopkeeper for protection money by saying, "nice little business you got here, I'd hate to see anything happen to it."

Putin then redoubled his support for the Syrian government in response to Bandar's blend of bribes and warnings. The source said Russia also issued its own thinly veiled threats against the Saudis. The Saudis may have substantial "soft power" -- with their oil and money -- but Russia has its own formidable "hard power," including a huge military, the source said.